1 /* $NetBSD: t_infinity.c,v 1.6 2012/09/26 07:24:38 jruoho Exp $ */
2
3 /*-
4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Martin Husemann <martin@NetBSD.org>.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_infinity.c,v 1.6 2012/09/26 07:24:38 jruoho Exp $");
33
34 #include <atf-c.h>
35 #include <math.h>
36 #include <float.h>
37 #include <stdlib.h>
38
39 ATF_TC(infinity_float);
ATF_TC_HEAD(infinity_float,tc)40 ATF_TC_HEAD(infinity_float, tc)
41 {
42 atf_tc_set_md_var(tc, "descr",
43 "check FPU generated infinite float values");
44 }
45
ATF_TC_BODY(infinity_float,tc)46 ATF_TC_BODY(infinity_float, tc)
47 {
48 float v;
49
50 v = FLT_MAX;
51 v *= v;
52 ATF_REQUIRE(isinf(v));
53 ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
54
55 v = -FLT_MAX;
56 v *= v;
57 ATF_REQUIRE(isinf(v));
58 ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
59 }
60
61 ATF_TC(infinity_double);
ATF_TC_HEAD(infinity_double,tc)62 ATF_TC_HEAD(infinity_double, tc)
63 {
64 atf_tc_set_md_var(tc, "descr",
65 "check FPU generated infinite double values");
66 }
67
ATF_TC_BODY(infinity_double,tc)68 ATF_TC_BODY(infinity_double, tc)
69 {
70 double v;
71
72 v = DBL_MAX;
73 v *= v;
74 ATF_REQUIRE(isinf(v));
75 ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
76
77 v = -DBL_MAX;
78 v *= v;
79 ATF_REQUIRE(isinf(v));
80 ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
81 }
82
83 ATF_TC(infinity_long_double);
ATF_TC_HEAD(infinity_long_double,tc)84 ATF_TC_HEAD(infinity_long_double, tc)
85 {
86 atf_tc_set_md_var(tc, "descr",
87 "check FPU generated infinite long double values");
88 }
89
ATF_TC_BODY(infinity_long_double,tc)90 ATF_TC_BODY(infinity_long_double, tc)
91 {
92
93 #ifndef LDBL_MAX
94 atf_tc_skip("no long double support on this architecture");
95 return;
96 #else
97 long double v;
98
99 v = LDBL_MAX;
100 v *= v;
101 ATF_REQUIRE(isinf(v));
102 ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
103
104 v = -LDBL_MAX;
105 v *= v;
106 ATF_REQUIRE(isinf(v));
107 ATF_REQUIRE(fpclassify(v) == FP_INFINITE);
108 #endif
109 }
110
ATF_TP_ADD_TCS(tp)111 ATF_TP_ADD_TCS(tp)
112 {
113
114 ATF_TP_ADD_TC(tp, infinity_float);
115 ATF_TP_ADD_TC(tp, infinity_double);
116 ATF_TP_ADD_TC(tp, infinity_long_double);
117
118 return atf_no_error();
119 }
120